Suited Gappers

1. Two cards that share the same suit but have a single gap in the denomination between the two.

Example

An example of a suited gapper hand would be 7 of spades and 9 of spades. They share the same suit, however, have a gap (the 8) between them. These hands often fit the bill of "low investment - big payoff" because they are so well disguised in a hand.

Good Three Betting Hands

Generally, suited gappers are good hands to three bet with, both as all-in moves and with chips behind. The reason behind this is that suited gappers have equity when they get all-in with better hands, and they also flop well (assuming you're deepstacked and your three-bet gets flatted).

For example, let's say you get dealt 10s8s on the button with 19 BBs. It gets folded to the cutoff who raises 2.5x the big-blind with 35 BBs behind. You decide to move all-in with your suited gapper because you still have fold equity, as well as equity even if your opponent calls. It folds back to your opponent who calls and flips Ackh. You still have a 40% chance of winning the hand, and this fact coupled with your fold equity and the perceived calling range of your opponent make it a profitable play.